Abstract
The electrodeposition of Fe-Ni alloys was performed galvanostatically in the sulfate solutions of pH 1-3 at 40°C and the alloy deposition behavior was compared with that of Zn-iron-group metal alloys to investigate their codeposition mechanism. The deposition behavior of Fe-Ni alloy showed a typical feature of the anomalous codeposition, in which electrochemically less noble Fe deposits preferentially under most plating conditions. The anomalous codeposition behavior in Fe-Ni alloy deposition was evidently dependent on the pH buffer capacity of the solutions. This can be explained in terms of the preferential adsorption of FeOH on the deposition sites of more noble Ni due to the extremely smaller dissociation constant of FeOH+ than NiOH - in the multi-step reduction process of hydrated iron-group metal ions.
| Original language | English |
|---|---|
| Pages (from-to) | 3130-3135 |
| Number of pages | 6 |
| Journal | Materials Transactions |
| Volume | 45 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2004 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Mechanism of anomalous type electrodeposition of Fe-Ni alloys from sulfate solutions. / Nakano, Hiroaki; Matsuno, Masayuki; Oue, Satoshi; Yano, Masaaki; Kobayashi, Shigeo; Fukushima, Hisaaki.
In: Materials Transactions, Vol. 45, No. 11, 11.2004, p. 3130-3135.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mechanism of anomalous type electrodeposition of Fe-Ni alloys from sulfate solutions
AU - Nakano, Hiroaki
AU - Matsuno, Masayuki
AU - Oue, Satoshi
AU - Yano, Masaaki
AU - Kobayashi, Shigeo
AU - Fukushima, Hisaaki
PY - 2004/11
Y1 - 2004/11
N2 - The electrodeposition of Fe-Ni alloys was performed galvanostatically in the sulfate solutions of pH 1-3 at 40°C and the alloy deposition behavior was compared with that of Zn-iron-group metal alloys to investigate their codeposition mechanism. The deposition behavior of Fe-Ni alloy showed a typical feature of the anomalous codeposition, in which electrochemically less noble Fe deposits preferentially under most plating conditions. The anomalous codeposition behavior in Fe-Ni alloy deposition was evidently dependent on the pH buffer capacity of the solutions. This can be explained in terms of the preferential adsorption of FeOH on the deposition sites of more noble Ni due to the extremely smaller dissociation constant of FeOH+ than NiOH - in the multi-step reduction process of hydrated iron-group metal ions.
AB - The electrodeposition of Fe-Ni alloys was performed galvanostatically in the sulfate solutions of pH 1-3 at 40°C and the alloy deposition behavior was compared with that of Zn-iron-group metal alloys to investigate their codeposition mechanism. The deposition behavior of Fe-Ni alloy showed a typical feature of the anomalous codeposition, in which electrochemically less noble Fe deposits preferentially under most plating conditions. The anomalous codeposition behavior in Fe-Ni alloy deposition was evidently dependent on the pH buffer capacity of the solutions. This can be explained in terms of the preferential adsorption of FeOH on the deposition sites of more noble Ni due to the extremely smaller dissociation constant of FeOH+ than NiOH - in the multi-step reduction process of hydrated iron-group metal ions.
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U2 - 10.2320/matertrans.45.3130
DO - 10.2320/matertrans.45.3130
M3 - Article
AN - SCOPUS:11844278504
VL - 45
SP - 3130
EP - 3135
JO - Materials Transactions
JF - Materials Transactions
SN - 0916-1821
IS - 11
ER -